Lathe for the turning of wheels.



E.BLAU.

LATHE POR THE TURNING 0F WHEELS. APPLICATION FILED MAY 28, 1913.1,129,545, Patented Feb. 23, 1915.

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UNTTED STATES PATENT FFTQE;

ERNST BLAU, 0F RATIBOR, GERMANY.

LATE-IE FOR THE TURNING OF WHEELS.

Application filed May 28, 1913.

To all whom it may concern Be it known that l, ERNST BLAU, engineer,subject of the Kingdom of Prussia, residing at Ratibor, Germany, haveinvented certain new and useful mprovements in Lathes for the Turning ofWheels, of which the following is a speciiication.

This invention relates to lathes of the kind in which the gripping ofthe axle is effected in a known manner by means ot divided internallycylindrical and externally conical sleeves or bushings, which have theobject of rendering the distance of the wheel rim from the face plateindependent of the diameter of the neck or journal of the axle.

Tn the constructions hitherto used an internally conical sleeve has beenplaced over the axle neck and the main spindles of the lathe were boredout conically. ln the movement toward one another of the two mainspindles the latter were forced over the gripping sleeves whereby theaxle was centered and gripped fast. Where axle necks of varyingdiameters occurred, differently long movements of the head spindles onewith regard to the other had to be provided for. As a result of this thedistances or' the wheel rims from the face plates also varied and itthus became almost impossible to locate the tires always in the sameposition with regard to the tools. ln order to attain this as nearly aspossible, repeated and wearisome trying had to be resorted to by theattendant. Now according to the present invention it is possible todetermine the position for wheels of equal construction once for allwith precision by the provision of an abutment or mandrel which isguided in the main spindle. For wheels of dilierent construction asuitable adjusting device is arranged for the abutment. Now if thewheels were gripped in the manner used hitherto by moving, for instance,the right-hand sliding support or head stock toward the left-hand oneuntil the collar on the axle neck is brought against the abutment, theright-hand gripping cone would no doubt be tightened, whereas theleft-hand cone would either be loose in the conical recess of the headspindle or it would attain its bearing so soon as to prevent the axlecollar and the abutment from coming into contact with each other. It is,therefore, .necessary to provide an intermediate member which as hashitherto been the case with the main spindle is bored out conically, butis independently adjustable of the latter.

Speccation of Letters Patent.

Patented Feb.. 23, 1915.

Serial No. 770,390.

In the drawings, Figure 1 illustrates by way of example the left-handportion of a lathe in which the improvement according to the presentinvention is embodied. Fig. 2 is an enlarged detail cross sectional viewof a part of the mechanism, and Fig. 3 is a part sectional and partelevational view taken on line 3 3 of Fig. 2.

Arranged on the journal or neck l of the axle 2 in a known manner is thegripping sleeve or chuck 3. In inserting the wheel, the mandrel 5 iscaused to bear against the front face l of the collar. The mandrel 5 isarranged within the main spindle 6 and is adjustable in any suitablemanner, for instance, by means oi' a screw thread and nut 7 in axialdirection. Surrounding the cone 3 is a sleeve 8 which is axially movablewithin the main spindle 6 and is pressed over the cone 3, for instance,by means of a spring 9. Consequently the mandrel 5 serves for the'adjustment of the distance between the wheel and the face plate and themovable sleeve 8 is used for tightening the cone 3. This arrangement isnecessary only on one side (left side) of the lathe. 0n the other side,both the abutment 5 and the sleeve 8 may be dispensed with and theconical bore may be provided in the usual manner in the main spindles.

What I claim and desire to secure byLetters Patent is l. In a lathe forturning wheels, the combination with a head stock, of a main spindle, adivided internally cylindrical and outwardly conical sleeve for grippingthe neck of the wheel axle, means movable in said main spindle totighten said gripping sleeve and a mandrel also movable in said mainspindle relatively to said gripping sleeve and adapted to form anabutment for the collar on the neck of the wheel axle substantially asset forth.

2. ln a lathe for turning wheels, the combination with a head stock of amain spindle, a divided internally cylindrical and outwardly conicalsleeve for gripping the neck of the wheel axle, spring actuated meansfor tightening said gripping sleeve and a mandrel arranged within themain spindle for adjustment relatively to said gripping sleeve andadapted to bear on the collar on the neck of the wheel axle therebydetermining the distance between the wheel and the face plate,substantially as set forth.

3. In a lathe for turning wheels, the combination with a head stock of amain spindle, means for gripping the neck of an axle, resilientlymounted means for causing said gripping means to close upon the axle,and means mounted Within said spindle and having a movement independentof said gripping means whereby it may be positioned to act as a stop toposition the neck of the axle introduced into the head stock.

l. In a lathe for turning Wheels, the com-A In testimony whereof haveaflixed my 20 signature in presence of. two Witnesses.

ERNST BLAU.

Witnesses:

PAUL WEISS, ERNST KATZ.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

